Coupling knuckle for model railroad cars and locomotives



FIG. 1 is a perspective view of a coupling knuckle for model railroadcars and locomotives, showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a front view thereof.

The ornamental design for a coupling knuckle for model railroad cars andlocomotives, as shown and described.